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    <p>What you need to do is implement <a href="http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged.aspx" rel="nofollow">INotifyPropertyChanged</a> in your <code>ViewModel</code>: </p> <pre><code>public class YourViewModel : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public virtual void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } public void ShowThePanel() { PanelVisibility = Visibility.Visible; } private Visibility panelVisibility; public Visibility PanelVisibility { get { return panelVisibility } set { panelVisibility = value; OnPropertyChanged("PanelVisibility"); } } } </code></pre> <p>Then in your <code>XAML</code>:</p> <pre><code>&lt;StackPanel Visibility="{Binding Path=PanelVisibility, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" /&gt; </code></pre> <p>EDIT:</p> <blockquote> <p>The INotifyPropertyChanged interface is used to notify clients, typically binding clients, that a property value has changed. For example, consider a Person object with a property called FirstName. To provide generic property-change notification, the Person type implements the INotifyPropertyChanged interface and raises a <a href="http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged.propertychanged.aspx" rel="nofollow">PropertyChanged</a> event when FirstName is changed. For change notification to occur in a binding between a bound client and a data source, your bound type should either: </p> <ul> <li>Implement the INotifyPropertyChanged interface (preferred). </li> <li>Provide a change event for each property of the bound type. </li> </ul> <p>Do not do both.</p> </blockquote>
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    1. CO@Sandwich You need a way to Notify the UI that the value of the property has changed and this is just 1 way of doing it(MVVM 101). With `OnPropertyChanged("PanelVisibility");` below your `set`, it notifies the UI of the change. When using an Automatic property, it does not notify the UI of any changes in you ViewModel.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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